filter problem ORACLE ODBC

hello,
  I have a problem with the Filter property. When trying to filter
a ORACLE-table (accessed via ODBC) entering the expression:
PROTS_SECTIONID = 2
into the Filter property and setting the Filtered property to true I get

the error: "Operation not applicable".
why does the filter not work ?
thanks for any help - peter

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| Dr.Peter Wilk                                      |
| Europ Assistance Ges.m.b.H.                        |
| http://ourworld.compuserve.com/homepages/PeterWilk |
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